yay!!! more 2-stroke problems

[chargercalvin]

ok so its not a gs but i need help and i can always count on you guys for good advice. its a 91 rt180 2stroke. it starts but revs uncontrolably as soon as i start it. i thought carb...so i rebuilt it....i thought reeds.....replaced them......so now what??? im thinkin crank seal? how do i check/fix it?? anything will help im clueless.....and thanks in advance guys

[bobthebiker]

uncontrollable revving means you have an air leak SOMEWHERE in your motor.  look at your base gasket, crank seals, and intake boot.    I hate 2 stroke anything because they're so tough to keep running reliably.

[bill14224]

Yeah, vacuum leak.  Carb won't do that.  Carb will either make the bike run well, crappy, or not at all.  Unsteady revs is vacuum.

[werase643]

been sitting for a LONG time......?  crank seals

[sledge]

Get it running and, assuming its possible, spray some neat 2St oil or WD40 around the seals. Smoke and/or rough running as a result = a failed seal.